Frame for tractors



I ab. 19, 1929.

- 1,702,915 E. C. MYERS FRAME FOR TRACTORS Filed June 9. 1926 '3 Sheets-Sheet l 1/ PDQ Fin CF04. @5255 Feb. 19, 1929. 1,702,915

E. C. MYERS FRAME FOR TRACTORS Filed June 9. 1926 3 Sheets-Sheet 2 Feb. 19, 1929. 1,702,915

E. MYERS FRAME FOR TRACTORS Filed June 9. 1926 38heets-Sheet 5 c l/flaw EdwardLiM 5P5 Patented Feb. 19, 1929.

STATES 1,702,915 rATENT OFFICE.

EDWARD G. MYERS, 0F MILWAUKEE, WISCONSIN, ASSIGNOR TO WEHR G0,, OF MIL- WAUKEE, 'W'ZSCONSIN.

FRAME FDR rnaorons.

Application filed June 9,

This invention relates to a road working machine and is particularly directed to a scarifier for road rollers.

In scariiiers, as heretofore provided, it is the usual practice to attach them rearwardly of the machine and drag them after the machine. Obviously, when a tough portion of the roadway was encountered, there was a tendency to raise the rear of the machine and, consequently, lessen the tractive effort of the machine.

This invention is designed to overcome the defects noted above and objects of such invention are to provide a scarifiei" for road rollers, which is positioned between the front and rear wheels and in front of thecenter of gravity of the machine, so that when the diflicult portions of the road are encountered, there is no tendency to lessen the traction of the machine and, in addition to this, the maximum downward pressure from the machine is attained by this positioning of the scaritier, as the upward slanting thrust from the scarilier passes approximately throu h the center of gravity or else closely adjacent thereto.

Further. it has been the usual practice to position the tractor or power plant portion of the machine rigidly upon the side frame bars. Obviously, the jolt-ing of the machine was directly transmitted to the tractor and, consequently, damage frequently resulted. However, in the practice of this invention, this defect has been overcome and further objects of the invention are, therefore, to provide a novel form of cushion suspension for the front end of the power plant or tractor so that the shocks and jars from the scarifier are not transmitted to the tractor.

Most specifically, this invention has for its further objects the provision of a novel form. of yoke and spring sup-port, with the yoke enclosing the front end of, a conventional tractor, and with the spring carried by a transverse portion of the yoke and pivotally supporting the front end of the tractor, so that the maximum strength of chassis construction and the maximum efiicient and practical cushioning of the tractor is secured.

Further objects are to provide a novel form of road roller and scarifier in which a conventional tractor is used and is readily incorporated into the machine with a minimum of change.

Further objects are to provide a novel particularly 1926. Serial No. 114,790.

mode of controlling the vertical adjustment of the scarifier, and of providingthe maximum rigidity of support for the scarifier, the adjustment being so organized that both ends of the scarifier are uniformly and simultaneously raised or lowered. An embodiment of the invention is shown n tl ie'accompaiiying drawings in which F gure 1 is a side elevation of the road roller and scarifier;

Figure 2 is a sectional view on the line 22 of Figure 1;

Figure 3 is a plan view of the structure shown in Figure l; 7

Figure 4: is a sectional view on the line 4 4 of Figure 3. I

Figure 5 is a transverse line section View approximately at the front end of the tractor,

Referring to the drawings, it will be seen that the machine comprises a pair of curved channeled side bars 1. These bars 1 are approximately horizontal at their front and rearends and curve inwardly, as indicated 111 Figure 3. However, it is to be noted from Figure 1 that the front end 1, of these side bars, is upwardly spaced with reference to the rear end thereof, and isjoined to such rear end by an upwardly arched portion. This front end is rigidly attached to a head 2 whichcarries the king pin of the front yoke 3 for the front roller 4. This king pin continues upwardly, and is reduced to form a. vertical shaft 5 which carries a segmental gear 6 of the worm type. This segmental gear or worm wheel meshes with a worm 7, carried by the front end of a steering shaft 8, such steering shaft extending to the rear of the machine and being provided with a manipulating hand wheel 9.

The rear end of each of the side frame bars 1 is provided with a shoe 10 which fits the rear axle housing 11 of the tractor, such tractor being indicated generally by the reference character 12. This tractor may be of conventional construction and of a wellknown type, such, for instance, as that known as the Fordson. U bolts 13 pass beneath the rear axle housings 11 of the tractor and clamp such rear axle housing to the shoes 10 and, consequently, clamp them to the side frame bars 1, forming therewith a rigid unita structure.

he rear axle housing 11 encloses the rear axles which are supported by the rear rollers 14.

The front end of the tractor is provided with the usual downwardly extending front yoke or fitting 15, which is joined by means of a pintle pin 16 with a pivot block 17. This pivot block cooperates with a bottom plate 18 between which the front spring 19 is clamped. The ends of the lower leaves of the front spring extend beneath retaining straps or eyelets 20, as indicated in Figure 5, these -eyelets 20 being carried by a transverse channeled bar 21.

An inverted U-shaped yoke 22 is positioned between the side frame bars 1 and secured rigidly thereto. This yoke is of channeled construction and carries the transverse bar 21. Preferably corner reenforcing' members 23 are usedat the corners or ends of the bottom bar21.

a very rigid stop against which the scarifier may hear.

The construction of cross heads 24 or slidingblocks is illustrated in Figure 2, and it will be seen, that such cross heads or blocks are cut out to receive the vertical arms'of the yoke 22. These adjusting blocks or cross heads receive the vertical adjusting rods or screw rods 27, as shown in Figures 1 and 5, and rigidly hold such rods. These rods pass through the upper and lower arms of theguiding brackets 28, see Figure 5, and are preferably threaded at their upper ends. They receive the threaded nuts or hubs 29 which are positioned between the upper and lower arms of the brackets 28. Preferably, a shell or casing 30 joins the outer ends of these upper and lower .arms, and constitutes a housing. Further, it is to be noted that each of the nuts or hubs 29 is provided with an integral sprocket wheel 31 and that these sprocket wheels are joined by a transverse sprocket chain 32. Further, it will be noted particularly from Figure 5, that one of the hubs or nuts 29 is provided with a bevel. gear 33 which meshes with a bevel gear 34, carried by the adjusting shaft 35, see Figures 3 and 4. This adjusting shaft 35 extends rearwardly and is provided with a manipulating hand wheel 36 adjacent its rear end. The shafts 8 and 35 are carried in bearings which are, in turn, supported by a bracket 37 carried by the side frame bars. Any suitable seat may be provided adjacent the rear of the machine. For instance, the usual tractor seat 38 may be utilized without any alterations.

It is to be noted that any jarring or j olting from the scarifier is not transmitted to the tractor or power plant as the device is so constructed that the front end of the power plant is freely cushioned in the U-shaped yoke 22.

It is to be particularly noted that the scarifier is mounted slightly in front of the center of gravity and, consequently, even when a rough or difiicult portion of the roadway is encountered, it does not lessen the tractive effort of the machine. It is to be understood that any suitable means may be employed for temporarily holding the scarifier up after it has been rocked about its pivot points, as, for instance, when the machine is travelling to and from its work. This means has not been illustrated, as it may be any simple, well-known construction.

It is to be noted further, that the steering of the machine and also the depth of cut of the scarifier may be easily regulated by the driver from his rear seat by adjusting thehand wheels 9 and 36.

Although the invention has been described in considerable detail, such description is intended as illustrative rather than limiting as the invention may be variously embodied and as the scope of such invention is to be determined as claimed.

I claim:

A road working machine adapted to receive a tractor, said machine comprising front and rear supporting rollers, side frame bars, means for attaching the rear axle of the tractor to the rear portion of said side frame bars, a rectangular suspension unit positioned between said side frame bars ad acent the front thereof and rigidly secured to said side frame bars, said unit having a transverse bottom portion and having an upwardly bowed spring having its ends supported by the bottom of said -rectangular unit, said spring having a cleat secured to its upper central portion and provided with an apertured upward- 1y projecting lug adapted for pivotal attachment to the front lug of the tractor.

In testimony that I claim the foregoing I have hereunto set my hand at l\'[ilwaukee, in

the county of Milwaukee, and State of Wisconsin.

ED ARD c. MYERS. 

